zoukankan      html  css  js  c++  java
  • 滑轮监听

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
        <script src="jquery-3.2.1.js"></script>
        <style>
            *{
                margin: 0;
            }
            #menu{
                height: 48px;
                width: 100%;
                background-color: #3075dc;
                color: #565656;
    
    
            }
            #center{
                width: 700px;
                height: 47px;
                margin: 0 auto;
            }
            .title{
                height: 47px;
                text-align: center;
                line-height: 40px;
                float: left;
                width: 80px;
                cursor: pointer
            }
            #text-box{
                height: 5000px;
                width: 1100px;
                margin-left: 300px;
                border: 1px solid salmon;
                float: left;
    
    
            }
            #left-box{
                height: 80px;
                text-align: center;
                background-color: darkgray;
                float: left;
                border: black 1px dashed;
                width: 150px;
                position: absolute;
    
            }
            #left-box a {
                height: 30px;
                background-color: #7A77C8;
                display: inline-block;
                border: #48f444;
                color: #c0cddf;
                width: 150px;
                cursor: pointer
    
            }
            #right-box{
                width: 900px;
                margin-left: 150px;
                height: 1300px;
                text-align: center;
                color: #48f444;
                display: inline-block;
                position:relative;
    
            }
            #right-box div{
                border: #3075dc 1px solid;
                display: block;
                height: 700px;
    
    
            }
            .fafafa{
               position: fixed !important;
                top: 0;
            }
    
        </style>
    </head>
    <body>
        <div id="menu">
            <div id="center">
                <p class="title" onmouseover="func1(this)" onmouseout="func2(this)">首页</p>
                <p class="title" onmouseover="func1(this)" onmouseout="func2(this)">文章</p>
                <p class="title" onmouseover="func1(this)" onmouseout="func2(this)">图片</p>
                <p class="title" onmouseover="func1(this)" onmouseout="func2(this)">电影</p>
                <p class="title" onmouseover="func1(this)" onmouseout="func2(this)">论坛</p>
    
            </div>
            <div id="text-box">
                <div id="left-box" >
                    <a num="1">第一章</a>
                    <a num="2">第二章</a>
                    <a num="3">第三章</a>
                    <a num="4">第四章</a>
                </div>
                <div id="right-box">
                    <div n="1" style="background-color: black">窗前明月光</div>
                    <div n="2" style="background-color: #7A77C8">疑似地上霜</div>
                    <div n="3" style="background-color: #2b99ff">举头望明月</div>
                    <div n="4" style="background-color: #9b9b9b">低头思故乡</div>
                    <div>hehe</div>
                </div>
            </div>
        </div>
        <div onclick="GoTop()" style=" 45px;height: 45px;background-color:yellowgreen;color: black;position: fixed; right: 60px; bottom: 80px;text-align: center;cursor: pointer;">返回顶部</div>
    <script>
        function func1(ev) {
            $(ev).css("color","red").siblings().css("color"," #565656");
        }
    
        function func2(ev) {
            $(ev).parent().children().css("color","#565656");
        }
    
        window.onscroll=function() {
            if ($(window).scrollTop() > 48) {
                $("#left-box").addClass("fafafa");
    
            }else {
                $("#left-box").removeClass("fafafa")
            }
        }
        function  GoTop() {
                $(window).scrollTop(0);
        }
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  • 原文地址:https://www.cnblogs.com/laoguiaabb/p/8044605.html
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